钻杆

SFMCs drill pipes are manufactured in according to or exceed the requirement of API 5D,7,and RP7G.The residual elements such as sulphur and phosphorus are strictly controlled in the pipe body and tool joints material during the steel making process, which make the kind of material with high physical properties. Heat Treatments is a decisive process in the production of tool joints and pipe body. Heat treatment must be uniform and deep enough to ensure required physical properties full length, especially in the critical sections of the connection and weld zone. Heat treatment programs are established on the basis of the actual chemical analysis of each heat of steel to ensure the materials meet or surpass the requirements of API Specification. The drill pipe undergoes a full-length inspection that checks the defects; especially the strict inspections on weldneck/upset region are preformed with our both manual and automatic inspection equipments to ensure the high quality.